Oil well tubing wrench



Jan. 21,1936; J, AYLQR 2,028,737

IOIL WELL TUBING WRENCH Filed July 10, 1934' 8 5 INVENTOR Patented Jan. 21, 1936 UNITED STATES PATENT v OFFICE 4 Claims.

The invention relates to wrenches for rotating oil-well tubing sections, and has for its object to provide a device of this character whereby the casing sections may be screwed into or out of couplings connecting the sections, as the tubing is sunk or pulled.

A further object is to provide an oil well tubing wrench comprising a jaw adapted to be received in one side of the tubing, a handle member and a link connection between the handle member and one end of the jaw and provided with means whereby when the handle is moved in one direction said links will cooperate with the adjacent side of the tubing for rolling or forcing the tubing side into the jaw for positively holding the tubing during a screwing or unscrewing operation. Also to provide means whereby upon a reverse movement of the handle said link connection between the handle and jaw will roll the tubing out of the jaw.

A further object is to provide an oil well tubing Wrench comprising a jaw segmentally shaped and adapted to arch one side of the tube with a gripping die at the outer end thereof, a handle member adjacent the inner end of the jaw and having a link connection with said jaw end and a link connection with gripping means adjacent its pivotal point to the jaw and cooperating with the periphery of the tube whereby when the handle member is moved in one direction for a tube turning operation the tube will be rolled into gripped position within the jaw and held therein, and when the held member is moved in the opposite direction said means carried by the link connection will roll the tubing out of its gripped position within the jaw.

With the above and other objects in view the invention resides in the combination and arrangement of parts as hereinafter set forth, shown in the drawing, described and claimed, it being understood that changes in the precise embodiment of the invention may be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing:

Figure 1 is a collective detail perspective view of the portions of the wrench to better illustrate the structure.

Figure 2 is a plan view of the wrench, showing the same in closed position with the upper plate of the link connection removed.

Figure 3 is a plan View of the wrench, showing the same in open position at the starting of the tube rolling and gripping operation and with the upper plate of the link connection removed.

Figure 4 is a plan view of the wrench showing the same in closed position on a tube and the handle in open position in dotted lines and with the upper plate of the link connection removed.

Figure 5 is a plan view of the wrench showing 5 the same on a tube and showing the rolling and gripping plates in their various positions assumed during the tube gripping operation.

Wrenches of this character are relatively large as the tubing sections they grip are necessarily large and of the type used in oil well. In using wrenches of this size in the oil well field three men usually stand around the tubing and each one imparts a pull on the handle for a continuous turning operation. If desired the handle l may be initially turned where the thread of the tube is stuck by applying a block and tackle to the eye 2 carried by the handle. In wrenches as at present constructed there is not a positive gripping within the jaw, and when there is a frictional gripping it is exceedingly hard to remove the wrench from its gripping position on the tube. The present invention is primarily designed to provide means whereby upon the initial movement of the handle in one direction, the tube will be rolled or forced into gripped position Within the segmentally shaped jaw 3 of the wrench, and upon movement of the handle I in the opposite direction the gripped tube within the jaw will be rolled from its gripped position within the jaw 3. The jaw 3 is segmentally shaped and has its outer end provided with a die 4 adapted to engage and bite into one side of the outer periphery of the tube section 5.

The inner end of the jaw 3 is pivotally connected at 6 on a shoulder bolt 1 to link plates 8 which are on opposite sides of the jaw, and which plates are provided with gripping teeth or shoulders 9, which, when the links are in open position, as shown at In in Figure 5, engage the outer periphery of the tubing 5 opposite the die 4 carried by the jaw, and when the plates 8 are moved towards the tubing 5 from their dotted line positions a in Figure 5, the adjacent side of the tubing is rolled into the jaw 3 on the die 4 as a pivotal point until the plates 8 assume the intermediate full line position b, Figure 5 and the further moving of the plates 8 to the full line position a, Figure 5 will force the tubing into gripped relation within the jaw 3, thereby positively gripping the tubing and positively holding the wrench on the tube. When it is desired to remove the wrench from the tubing a reverse movement of the handle I in the direction of the arrow d will cause the gripping teeth 9 of the plate to roll the tubing out of its gripped position within the segmental jaw 3.

is pivotally connected at 16 to the gripping plates l 8 and'is slidablyvmounted in the chamber ll in l The handle member I at its inner end is'pivotally connected on shouldered bolts I 1 between the gripping plates 8 and is provided with anarm 12 'which cooperates with an integral arm 13 carried by the inner'e nd of thesegmentally shaped jaw 3, for positively forcing the gripping and a rolling plates 8 towards the tube 5 during a gripping operation. Handle member I' is normally forced-towards closed position-by .means of a coiled spring [4 surrounding the shaft I5 which the extension l8 in one side of the handle.

When it is desired to removethe wrenchand Z the handle ismoved inthe direction of the arrow d, the spring l4 andshaft l5.will form a stop forthe handle,i and this will cause a pivotalaction of the gripping plates 8' on the pivotal point 6,

: andduring this movement the gripping 'teethr9 of the plates 8, which engagethe side of the tube ,5 opposite the die 4, will roll the tube out of its grippe'dlpositionwithin the jaw 3. It is obvious that the gripping teeth}! of the platesmay be in the form of dies the same as the die 4 if desired,

.and'that the 'arcuate portions 19 of the gripping plates a nd'2ll of the jaw 3 are on arccorrespondi ing to'the outer diameter of the'tube, hence it 7 willbe seen there is a positive gripping and hold- I ing of the tube at all times during a' tube rotating operation. Jaw 3" is provided with a handle mem- 'ber: 2| adapted to be gripped while manipulating the wrench for instance when placing the same in positionorremovingthe same. 7

7 From the above itwill beseen that avwrench V isi provided for rotating on, well tube sections during a screwing or unscrewing operation, that the wrench is positively gripped'onthe'tube with the tube gripped the segmentally shaped jaw and that upon initial movement of the handle in' 1 one direction the tubeis rolled into grippedposi- 'tion within the jaw for positively attaching the wrench and holding the tube, and upon move- :ment of handle in the opposite direction the tube :is'rfolled' out'of gripped position within the seg Ymentally shaped jaw;

member, ahandle member adjacent the inner end; 1 v

V The invention having been setioithv what is 4 ls gclaimedasnewand useful is: l I

'1'. A tubing wrench comprising 'a semicircular shaped jaw adaptedjto arch one sideof a tube, the outer end of said jaw having a tube gripping xjaw.

of the jaw, a link connection between the handle member and the inner end ofjthe jaw and forced V i into engagement with the tube upon movement of the handle member in one direction, said link connection having tube engaging means adjacent 7 its pivotal connection to the jaw and cooperating with the'periphery oi the tube whereby uponmovement of'the' handlein one direction a tubewill be rolled into the segmentally shaped jaw and gripped therein and upon movement in an 7 opposite direction a tube willjberrolled from its gripped position within the jaw;

shaped jaw adapted to arch one side of a tube,

"a handle member, a link-connection between the handle member and the inner end of theijaw, and" means carried by the link connection adjacent'its; pivotal connection toithe jaw and cooperating with the periphery of a tube whereby one side of atube will be rolled into and out of gripped position withinthe jaw at the link side of the jaw :upon movement of the handlein one direction or the other. i 7 3i A wrench comprising a segmentally'shape'd jaw adapted to arch one side of a'tube, means carried by the outer end of said jaw for biting J into one side of the'tube, gripping plates pivotally connected to the other end of said'jaw at' opposite sides thereof, ahandle memberpivoted between the plates, an arm carried by the handle 2. A tube wrench comprising a segmentally member adjacent its pivotal point and extending towards'theinner end of theijaw, an arm carried by the inner end of the jawland extendingto l wardsthe handle member and to the outers'ide" o-fthe arm carried bythe handleinember and inthe' path thereof, and tube engaging teeth car -p 4 1 ried by theplates adjacent their pivotal connec- 1 tion to the jaw and'adapted to engage the outer' f periphery of a tube and roll the tube into the jaw.

JAMES" s." TAYLOR. 

